21007467

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{439}}^1$

素因数の和:867

約数の個数: 24

約数和(自身を含む): 32832800

約数和(自身を除く): 11825333

約数列:

[1, 3, 9, 13, 39, 117, 409, 439, 1227, 1317, 3681, 3951, 5317, 5707, 15951, 17121, 47853, 51363, 179551, 538653, 1615959, 2334163, 7002489, 21007467]

約数ペア:

[(1, 21007467), (3, 7002489), (9, 2334163), (13, 1615959), (39, 538653), (117, 179551), (409, 51363), (439, 47853), (1227, 17121), (1317, 15951), (3681, 5707), (3951, 5317)]